center{
    margin-top:200px;
    width:500px;
    margin-left:auto;
    margin-right:auto;
}
.btn{
    margin-top:20px;
    width:100px;
    margin-bottom:20px;
}
label{
    margin-bottom:20px;
}
.loading{
    width:600px;
    height:450px;
    position:absolute;
    z-index:20000000000000;
    opacity:0.8;
    display:none;
}
.img-load{
    width:100%;
    height:100%;
}
.main{
    width:980px;
    top:0px;
}
.body{
    margin:0px;
    padding:0px;
}
.loading-title{
    width:100%;
    text-align:center;
}